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CVE-2023-52902— nommu: fix memory leak in do_mmap() error path

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 nommu 组件在do_mmap()的错误路径中存在内存泄漏问题。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 8220543df1489ef96c3d4e8b0b3b03c340e3943e< 1442d51026c58e7c11dd5f9b19650632a48676d4 affected
8220543df1489ef96c3d4e8b0b3b03c340e3943e< 7f31cced5724e6d414fe750aa1cd7e7b578ec22f affected
6.1 affected
< 6.1 unaffected
6.1.8≤ 6.1.* unaffected
6.2≤ * unaffected
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I. Basic Information for CVE-2023-52902

Vulnerability Information
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Vulnerability Title
nommu: fix memory leak in do_mmap() error path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nommu: fix memory leak in do_mmap() error path The preallocation of the maple tree nodes may leak if the error path to "error_just_free" is taken. Fix this by moving the freeing of the maple tree nodes to a shared location for all error paths.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 nommu 组件在do_mmap()的错误路径中存在内存泄漏问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 8220543df1489ef96c3d4e8b0b3b03c340e3943e ~ 1442d51026c58e7c11dd5f9b19650632a48676d4 -
Linux Linux 6.1 -

II. Public POCs for CVE-2023-52902

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III. Intelligence Information for CVE-2023-52902

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Other References for CVE-2023-52902 (2)

Same Patch Batch · Linux · 2024-08-21 · 68 CVEs total

CVE-2023-52910 8.8 HIGH iommu/iova: Fix alloc iova overflows issue
CVE-2024-43881 8.8 HIGH wifi: ath12k: change DMA direction while mapping reinjected packets
CVE-2022-48871 8.8 HIGH tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer
CVE-2024-43878 8.1 HIGH xfrm: Fix input error path memory access
CVE-2022-48883 7.8 HIGH net/mlx5e: IPoIB, Block PKEY interfaces with less rx queues than parent
CVE-2024-43882 7.8 HIGH exec: Fix ToCToU between perm check and set-uid/gid usage
CVE-2023-52913 7.8 HIGH drm/i915: Fix potential context UAFs
CVE-2022-48892 7.8 HIGH sched/core: Fix use-after-free bug in dup_user_cpus_ptr()
CVE-2024-43877 7.8 HIGH media: pci: ivtv: Add check for DMA map result
CVE-2024-43880 7.8 HIGH mlxsw: spectrum_acl_erp: Fix object nesting warning
CVE-2022-48899 7.8 HIGH drm/virtio: Fix GEM handle creation UAF
CVE-2022-48872 7.8 HIGH misc: fastrpc: Fix use-after-free race condition for maps
CVE-2022-48873 7.8 HIGH misc: fastrpc: Don't remove map on creater_process and device_release
CVE-2022-48874 7.8 HIGH misc: fastrpc: Fix use-after-free and race in fastrpc_map_find
CVE-2023-52903 7.8 HIGH io_uring: lock overflowing for IOPOLL
CVE-2022-48887 7.8 HIGH drm/vmwgfx: Remove rcu locks from user resources
CVE-2022-48878 7.8 HIGH Bluetooth: hci_qca: Fix driver shutdown on closed serdev
CVE-2023-52907 7.8 HIGH nfc: pn533: Wait for out_urb's completion in pn533_usb_send_frame()
CVE-2023-52909 7.5 HIGH nfsd: fix handling of cached open files in nfsd4_open codepath
CVE-2024-43872 7.5 HIGH RDMA/hns: Fix soft lockup under heavy CEQE load

Showing top 20 of 68 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-52902

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